Creating Random Portfolios From List Of Assets
Nov 11, 2013
I am creating 100 random portfolios from a list of 10 assets. I have the return history of the 10 assets and I'm able to calculate the mean and standard deviation of each asset as well as the covariance/correlation between each of the 10 assets. I want to choose to portfolio with the least variance as well the portfolio with the lowest and highest return.
Would it also be possible to introduce a limit that constrains the maximum allocation to each asset at 25%?
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Apr 19, 2007
I have a mastersheet that once I open I would like to generate a 3 digit serial number in cell C22. Once this file is opened and the number is generated I do not want the number to change at that point. I have a macro to save the file with data in certain cells. Once this macro is run and the file is saved I will need to be able to open that file to view info but the serial number can't change.
I would like to do this without an add-in so that any client can use file no matter there settings if possible
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Jun 2, 2006
Im an using excel to run a simulation of demand over a period of 200 days. i have an average daily demand of 7.75 and a stdev of 2.6. Is there any way to generate random numbers (for daily demand) based on this data?
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Aug 9, 2013
Here's what I'd like to do:
Have 10 columns... one column would be for the "1s", another for the "2s", another for the "3s", etc...
But I don't want to have them in straight order (i.e. 1 x 1 =, 1 x 2 =, 1 x 3 =, etc...) because the pattern is easily memorized, no matter what number he's working on.
I'd like to be able to hit a button (or something) and have each column shuffle (or randomize) the order in which the equations will be displayed.
So, a column might come up 3 x 6 =, 3 x 9 =, 3 x 1 =, 3 x 4 =, etc...
And next time it might come up 3 x 5 =, 3 x 2 =, 3 x 4 =, etc...
This way he won't be able to memorize any patterns and he'll actually need to learn his multiplication tables.
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Jul 27, 2014
I am looking for a product that uses excel to create a random test form a bank of questions. I have 50 questions in all and I need a random test of 35.
I can and have messed around with the following. Excel 2012
A
B
C
D
1
Random #
Test Number
Small-Sort
Random Question
I could even shorten it a bit by placing like this. MATCH(SMALL($A$2:$A$4,B2),$A$2:$A$4,0). Of course this is only the start and it would have in column B 1-50 and in column C&D 1-35 for the selection process. Then I was going to set up on sheet 2 my list of questions 1-50 and my idea was to use 1.1, 1.2, 1.3, & 1.4 for the answers to question 1 and then vlookup. so that when and if question 1 is part of the 35 random then I could pull the answers over as well. but as I started the 'animal' will get bigger and bigger fast.
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Jan 8, 2012
I'm trying to match stock portfolios of mutual funds with stock indexes to find out how much the portfolios deviates from the indexes (active share).
The deviation is simply calculated as the percentage of the portfolio holdings not included in the index.
The data I have is 10 years of monthly portfolio weightings for 30 mutual funds and 8 indexes, organized with company names in column A and the percentage weight for each company in each month in the adjacent rows (see simplified screenshot). I want to match all companies with all indexes.
Twofold:
1)The mutual fund data comes from one source and index data from another. This means company names are not spelled exactly the same.
2)Within the mutual fund datasets, a company might be listed more than once with different names. The different names refer to different periods in time, so what should be matched with the index is the sum of these columns.
The specific task that I need to accomplish is to match company name in the portfolio with the index and then return the absolute difference between weight in the portfolio and the weight in the index for each month. (see screenshot).
Hence the result I'm looking for is a matrix of company names (of each portfolio) in col A and the absolute difference between the portfolio and the index weight in the adjacent row.
The best solution I've come up with is to device a list of all the portfolio company names, including "doubles", and then for each index, add these company names and copy the row weightings. This I'm not particularly happy with because index weightings would no longer sum to 100 and it would be difficult to check for errors. Also, it would still take a lot of time.
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Mar 23, 2012
I have 800 rows of patient information, I need to sample 70 patients. I used the Random.org randomizer to get my 70 patients. That randomizer only gives me the line numbers such as 1, 8, 23, 45, 70, etc. I then need to go to Excel and just pick out the patients on those lines I was given above. Is there an easy way in Excel to have my spreadsheet of the 800 rows and create a (simple) calculation that will pick out the line numbers that I need all at once, so I do not have to go thru manually and choose the data from row 1, 8, 23, 45 etc to make my new spreadsheet with only my sample patients on it. OR is there a easy way to pick 70 random lines from a spreasheet..
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Jan 7, 2010
I have some VBA (using Excel 2007) that deletes and re-creates a bunch (20-ish) checkboxes in a spreadsheet. Since i'm using the controls-based checkboxes, Excel defaults them to object names of "CheckBox1, CheckBox2, CheckBox3, etc" as I create them the first time around.
Later on, i clear all checkboxes and implement the SAME checkbox-creating code to re-create all or some of the checkboxes, but Excel doesn't number them in order the second time around! I end up with something like "CheckBox2, CheckBox19, CheckBox3, CheckBox12, etc."
What could be causing my code to create things out of order the second time around? Is there a way to reset Excel's Checkbox-numbering iterator?
The code i'm using to create checkboxes is:
Dim x As Long
Dim BoxCell As String
BoxCell = ""
x = 0
'j gets passed into the sub as a "Long" somewhere between the values of 5 and 35
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Aug 4, 2006
What i would like to do is, create a random weekly work rota, so I just have to go in every week and let excel randomly but fairly creat a rota the employees so that they don't argue about whose doing what and just get on with the work. : D
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Jun 3, 2014
I'm trying to figure out how to make a spreadsheet where in one column a type of asset is entered through a drop down menu and then the next few columns are attributes - model, pattern, manufacturer, etc. - that would all have values entered through drop down menus populated based on the choice of 'type of asset' in the first column.
I can get a drop down menu for the 'type' column and a dependent drop down in the second column based on choice of 'type' using =INDIRECT(), but I do that by naming the dependent lists of models for each type after the types listed in the list of types. Once I've done that I can't name the lists of patterns after the types because those names are in use by the model lists. So how would I make multiple lists of attributes associate with the same list of types?
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Aug 11, 2014
Im looking to create random data for an athlete over about 4 months with daily tests, however when im using the =randbetween(*,*) function the data is too 'Random'. so im looking to create a trend in the data, like real athletes will have. is there a function in Excel 2010 that can do this?
The boundaries of the data are -336,416 (i know its quite a big range)
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Jun 11, 2014
I am in need of a formula to calculate monthly straight-line depreciation assets based on the current month’s days.
So, if an asset costs $10,000 and has 15 years of useful life, in June this would calculate 15 divided by 12 divided by 31 times 10,000. I want to put cost in one cell and date in another, for the formula.
BTW, someone is using this formula, =(16736*(1/15)*(6/12))*31/184
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May 19, 2014
I am trying to create challenge/response cards. Each card will have a 5-digit number in the upper-left and lower-right corner along with a series of rows containing a line number and 3 pairs of challenge/response words.
Rather than have have copies of these cards, I want the central office to have a macro-enabled workbook wherein they can enter the two numbers from the card and have the challenge/response matrix regenerate on a worksheet.
So, essentially, I want the challenges random number generator seeded from one of the 5-digit numbers and the responses random number generator seeded from the other 5-digit number.
I am trying to use
Code:
Randomize(Seed)
where Seed is one of the 5-digit numbers.
The problem appears to be that, no matter what I use for Seed, the RND(-1) function is not resulting in different numbers.
I am using Excel 2007 and Excel 2010.
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Nov 21, 2013
I'm trying to create a staff rota which will populate a rota randomly when prompted - I have been trying to find some way of connecting the random lists and the staff names, though this has proved difficult (to say the least!). How best to proceed? I'm also fully aware of the possibility that my present design will also double book people (place then on reception and telephone duty simultaneously).
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Jun 11, 2013
I'm creating a spreadsheet to keep track of my costs of production in an online game. Within the game there are a range of spawned resources that appear for only a short time before being unobtainable these resources have specific types that is shared between multiple spawns of the resource but each resource spawn has a unique name.
My first worksheet lists all the resources and their various qualities and the later worksheets are meant to allow me to choose from a list resources matching the requirements of the item I'm looking to craft. The example i have shown in the second picture requires Tatooinian Fiberplast and Lokian Wild Wheat to craft so in the Chosen Resource column I would like to have a drop down list allowing me to select the named resource type i would like to use - for Tatooinian Fiberplast the only thing on the list should be Omnitwixi and for the Wild Wheat it should show Fizi and Krad
[URL]....
[URL]....
I am aware there are people with more pressing problems than computer games and as such
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Nov 25, 2006
i have entered some values in excel like this
A1 B1
1 a
2 b
3 c
4 d
etc
i will put a command button, like "Randomise"
what i wanted is , if i click that command button, the Value in cell A1 should be remain same. but the values in B1 has to be randomly changed that is, eachtime i click the randomise button the value of b1 must keep changing for every click. someting like this
A1 B1
1 d
2 f
3 h
4 a
etc
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May 8, 2014
I would like to be able to compare the "standards" in Column A with the Assessment status in Column B and the Assessment period in Column C in order to generate a compact list in another workbook (ideally) or tab (if not). A list might typically contain all the standards that have been M (mastered) during a given Assessment period. I realize that filters would achieve this to a large extent but I was hoping to automatically populate another worksheet or tab.
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Dec 31, 2008
I need to create a file with random purchase list that have some restrictions.
I’ve been working on this file for few days, but I couldn’t get desirable results.
Attached a sample file that describes what I did. It build up as the final file (just the final file has many more items).
I’ll try to explain what I need and how it works:
There are 4 categories: Theater, Salon, Kitchen & garden.
I need to create random lists of purchases (each list should be a line at the total sheet)
there is budget limitation of $100000. Each category has minimum items that must be purchase (headlines are in red color, total of 9 items).
The minimum items that can be on one list are 11 (9 red columns & another 2 random columns). Maximum are 15 items (9 + 6). Same item shouldn’t appear twice at the same list.
This file chooses randomly 19 items and check if the list stands up the budget.
There are 3 issues that I couldn’t solve by myself:
1.I should define the file to stay within minimum & maximum items per list (11-15)
2.Make sure it doesn’t go over the budget
3.Stabilize the list the values will not change each time I’m doing changes to file
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Apr 5, 2008
How do I get a random name from a list that I have created? The random feature only deals with numbers. I want to be able to push F9 or click on something and have a cell randomly pull a name from the list.
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Jun 28, 2006
This might be a little complex to understand but I am going to try to make it clear as to what I am in need of. Basically I have a larger macro that runs and I need to add a pop up that asks for a percentage to be put into a new sheet. The percent is the percent of random rows on the current sheet to be put into a new sheet. Then it would have to create the new sheet with the random information. This is for a audit and we want to have it done randomly and no duplicates. There are no duplicates in the list at this point. The width if needed is from column A to column E.
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Mar 17, 2014
I am looking for a Macro that would randomly select 20 items from my inventory list for performing spot checks. Column F of Active Coil Log tab is where the data would need to pull from, however I would like all data in the row to go along with it. I've explored the RAND functions, but they don't seem to be the right fit .
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Oct 20, 2009
I have a spreadsheet of 1000+ companies and I want to take a random sampling of 100 of them. I would assume this could be accomplished by auto-filling a numerical value to each line of data (which I did), then scrambling only the column with the numbers (which I can't figure out), and then selecting the entire text and resorting it to put the numbers back in order and then just work with the first 100 rows (which I can do, if I knew how to make the numbers random).
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Oct 23, 2009
Say I have a list of 100 numbers (in column A). What formula would I use to have Excel list (in column B) 50 random numbers from the list of 100 or column A?
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Apr 30, 2014
I've got a list of items (formatted alphanumeric) in column G starting at row 2. I would like a cell formula that would randomly select 30 items from this column and place them in column H starting at row 2. One caveat is that the list must remain static once created. If the Rand()function is used, it recalculates whenever the worksheet is updated so that might be a problem.
Cell formula to do this? A VBA solution would be OK as well.
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Jan 12, 2007
On my excel spreadsheet, I have a list of 14 names in column A (row 1-14).
In a separate cell, I'd like for it to pull a random name from that list. How would I go about doing that?
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Jun 21, 2007
I have a frequency list (frequency per year) resulted from previous calculation. What I want is to generate random number as many as the frequency in the specified year, so that every year I will get the same amount of random numbers as the frequency. It is kind of the opposite of FREQUENCY function (but with random numbers involved). I need to use the result for further calculation.
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Feb 12, 2009
My objective is to take two different random counts of numbers written in column b, ranging from B9:B66. However I want to highlight the specific fields listed in the example below, and pull random numbers from those selected fields only. Then I want to pull another set of random numbers in the same column B9:B66, however using a different specific set of fields within column B; as shown in the second random formula string. Use the Press 9 feature to randomly select the two different numbers. What this attempt is trying accommplish is selecting one boy, one girl who have assigned numbers adjacent to their names(name field populated in column c).
What am I doing in correctly?
HTML Formula written to B70
=INDEX(B9:B66,RANDBETWEEN(1,COUNTA(B9,B13,B15,B16,B17,B20,B21,B23,B25,B31,B33,B34,B35,B37,B38,B39,B41,B42,B44,B45,B47,B50,B51,B52)),1)
Formula written to B72
=INDEX(B9:B66,RANDBETWEEN(1,COUNTA(B10,B11,B12,B14,B18,B19,B22,B24,B26,B27,B28,B29,B30,B32,B36,B40,B43,B46,B48,B49,B53,B54,B55,B56)),1)
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Oct 23, 2013
I want to create a simple worksheet that takes a list of names (All of the members of my family) and Randomly selects another name from that same list and matches them to it ( I don't want to say "paired" because I want each person to have a one way relationship to the other, in other words just because personA is matched to personB, i don't want personB to automatically be paired to personA) I hope that makes sense. Once every name on the list is matched with a person I would like to move that name to a database that I can track each year. The practical application of it is this: Each year our family randomly draws names and we are tasked to buy a new x-mas ornimate for that person, ideally you would not get the same person 2 years in a row, and the person that you have does not have you in return simply to add more variety and the database would track who had who each year.
Code:
Sub test()
Dim a, i As Long, temp, n As Long
a = Range("b2", Range("b" & Rows.Count).End(xlUp))
Randomize
With CreateObject("System.Collections.SortedList")
For i = 1 To UBound(a, 1)
[Code] ......
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Feb 13, 2014
I am working on a sampling tool in Excel which is based on what a user enters into a column. The user enters observation codes (text) in column A beginning at row 2 and going down to however many they have. I already have formulas which determine the sample size needed based on the number of nonblank values in that column; the resulting sample size is in G4. I'm thinking that I will need to have a form with a button module to select the random sample from the values in col A. This way Excel isn't running the module while the user is entering the values. The resulting sample can be pasted into a separate column or sheet.
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Aug 16, 2008
I need to set up a formula to choose 2 job titles from a single column. There can be 2 to n job titles (non-repeating) and I want to find the title at random. I have no problem finding the first job title using index and randbetween, but I want the second title to meet the same criteria, just not equal to the first job title.
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